如何在搜索引擎search.php页面中插入分页？
如果有1页，我不需要上一页按钮和下一页按钮。
如果有2页，我在第一页，我希望我可以使用下一步按钮。
如果有2页我在第二页，我也希望我只能拥有上一页按钮。
这是我目前的代码，希望你能帮助我：
<?php
//php code goes here
include 'connect.php'; // for database connection
include 'script_suggestion.php';
include 'script_close_suggestion_box.php';
$query = $_GET['q']; // query
$button = $_GET ['submit'];
$page_number = $_GET['page'];
if (!$page_number);
$page_number = 0;
$results_per_page = 10;
$next = $page_number + $results_per_page;
$prev = $page_number - $results_per_page;
?>
<html>
<head>
<title>
Brandon's Search Engine
</title>
<style type="text/css">
#title a {
font-size: 17pt;
margin: 5px;
padding: 2px;
border-color: black;
text-decoration: underline;
width: 544px;
}
#search-result {
display: block;
border: 1px solid grey;
border-color: grey;
}
#search-result:hover {
background-color: #dddddd;
width: 544px;
}
#link {
font-size: 17pt;
margin: 5px;
padding: 2px;
width: 544px;
}
#description {
font-size: 17pt;
margin: 5px;
padding: 2px;
width: 544px;
}
#search-page-number {
display: block;
width: auto;
height: auto;
border: 1px solid gray;
margin: 2px;
padding-left: 5px;
padding-right: 5px;
padding-bottom: 2px;
padding-top: 2px;
list-style: none;
float: left;
text-align: center;
}
#search-page-number:hover {
background-color: #dddddd;
}
#suggestion {
border: 1px solid black;
visibility: hidden;
position: fixed;
background-color: white;
z-index: 10;
}
#suggestion a {
font-size: 12pt;
color: black;
text-decoration: none;
display: block;
width: 548px;
height: auto;
text-align: left;
padding: 2px;
}
#suggestion a:hover {
background-color: #dddddd;
width: 544px;
padding: 2px;
}
</style>
</head>
<body>
<form method="GET" action="search.php">
<table>
<tr>
<td>
<h2>
Brandon's Search Engine
</h2>
</td>
</tr>
<tr>
<td>
<input type="text" value="<?php echo htmlspecialchars($_GET['q']); ?>" name="q" style="height: 27px; width: 550px; padding: 2px" name="q"
onkeyup="getSuggestion(this.value)" autocomplete="off" onblur="closeBox()" placeholder="Search Now"/>
<input type="submit" value="Search" name="submit" style="height: auto; width: 60px; padding: 2px" />
<div id="suggestion" style="width: 548px">
</div>
</td>
</tr>
</table>
<br>
<hr>
<table>
<tr>
<td>
<?php
//SQL query
$stmt = "SELECT * FROM searchengine WHERE title LIKE '%" . mysqli_real_escape_string($con,$query) . "%' OR keywords LIKE '%" . mysqli_real_escape_string($con,$query) . "%' OR link LIKE '%" . mysqli_real_escape_string($con,$query) . "%' LIMIT " . $page_number . " , $results_per_page";
$result = mysqli_query($con,$stmt) or die(mysqli_error($con));
$number_of_result = mysqli_num_rows($result);
$x++;
if($x==1)
if ($number_of_result < 1) {
echo "<b>No results found!</b>";
echo "<p>";
echo "Your search - <b>$query</b>" . " - did not match any documents. Please try different keywords.";
} elseif ($number_of_result > 1) {
echo "<b>$number_of_result results found!</b>";
echo "<p>";
//results found here and display them
$index = 1;
while (($row = \mysqli_fetch_assoc($result)) && ($index < 10)) {//10 results per page
$title = $row["title"];
$description = $row["description"];
$link = $row["link"];
echo "<div id='search-result'>";
echo "<div id='title'><a href='$link'>" . $title . "</a></div>";
//echo "<br />";
echo "<div id='link'><small>" . $link . "</small></div>";
//echo "<p>";
echo "<div id='description'><small>" . $description . "</small></div>";
echo "</div>";
echo "<br />";
$index++;
}
} elseif ($number_of_result = 1) {
echo "<b>$number_of_result result found!</b>";
echo "<p>";
//results found here and display them
$index = 1;
while (($row = \mysqli_fetch_assoc($result)) && ($index < 10)) {//10 results per page
$title = $row["title"];
$description = $row["description"];
$link = $row["link"];
echo "<div id='search-result'>";
echo "<div id='title'><a href='$link'>" . $title . "</a></div>";
//echo "<br />";
echo "<div id='link'><small>" . $link . "</small></div>";
echo "<br />";
echo "<div id='description'><small>" . $description . "</small></div>";
echo "</div>";
echo "<br />";
$index++;
}
}
?>
</td>
</tr>
<tr>
<td>
<input type="hidden" name="page" value="<?php echo 1; ?>" />
<div id="page-number">
Select Page Number:
<?php
//ie if 35 results are therer then we require 4 pages that are 0 to max_page_number
//current page number is equal to page_number
$max_page_number = $number_of_result / 10;
//echo $max_page_number;
echo "<ul>";
//both the condition are not the neccesary
if(!$page_number <= 0)
{
//print the link to previous page
echo "<li id='search-page-number'>";
echo "<a href=search.php?q=$query&page=$prev" . ">Previous</a>";
echo "</li>";
}
$i = 1;
for($index = 0; $index < $number_of_result; $index=$index+$results_per_page)
{
echo "<li id='search-page-number'>";
echo "<a href=search.php?q=$query&page=$i>";
echo $i++ . "</a>";
echo "</li>";
}
if($page_number < $number_of_result - $results_per_page)
{
//print the link to next page
echo "<li id='search-page-number'>";
echo "<a href=search.php?q=$query&page=$next" . ">Next</a>";
echo "</li>";
}
echo "</ul>";
?>
</div>
</td>
</tr>
<tr>
<td align="center">
To insert your site in result fill in the form at <a href="insert.php">here</a>.
</td>
</tr>
</table>
</form>
</body>
</html>
提前致谢。
答案 0 :(得分：0)
<?php
//php code goes here
include 'connect.php'; // for database connection
include 'script_suggestion.php';
include 'script_close_suggestion_box.php';
$query = $_GET['q']; // query
$button = $_GET ['submit'];
$page_number = (int)$_GET['page'];
if (!$page_number)
$page_number = 0;
$results_per_page = 10;
$next = $page_number + $results_per_page;
$prev = $page_number - $results_per_page;
?>
<html>
<head>
<title>
Brandon's Search Engine
</title>
<style type="text/css">
#title a {
font-size: 17pt;
margin: 5px;
padding: 2px;
border-color: black;
text-decoration: underline;
width: 544px;
}
#search-result {
display: block;
border: 1px solid grey;
border-color: grey;
}
#search-result:hover {
background-color: #dddddd;
width: 544px;
}
#link {
font-size: 17pt;
margin: 5px;
padding: 2px;
width: 544px;
}
#description {
font-size: 17pt;
margin: 5px;
padding: 2px;
width: 544px;
}
#search-page-number {
display: block;
width: auto;
height: auto;
border: 1px solid gray;
margin: 2px;
padding-left: 5px;
padding-right: 5px;
padding-bottom: 2px;
padding-top: 2px;
list-style: none;
float: left;
text-align: center;
}
#search-page-number:hover {
background-color: #dddddd;
}
#suggestion {
border: 1px solid black;
visibility: hidden;
position: fixed;
background-color: white;
z-index: 10;
}
#suggestion a {
font-size: 12pt;
color: black;
text-decoration: none;
display: block;
width: 548px;
height: auto;
text-align: left;
padding: 2px;
}
#suggestion a:hover {
background-color: #dddddd;
width: 544px;
padding: 2px;
}
</style>
</head>
<body>
<form method="GET" action="search.php">
<table>
<tr>
<td>
<h2>
Brandon's Search Engine
</h2>
</td>
</tr>
<tr>
<td>
<input type="text" value="<?php echo htmlspecialchars($_GET['q']); ?>" name="q" style="height: 27px; width: 550px; padding: 2px" name="q"
onkeyup="getSuggestion(this.value)" autocomplete="off" onblur="closeBox()" placeholder="Search Now"/>
<input type="submit" value="Search" name="submit" style="height: auto; width: 60px; padding: 2px" />
<div id="suggestion" style="width: 548px">
</div>
</td>
</tr>
</table>
<br>
<hr>
<table>
<tr>
<td>
<?php
//count
$count_sql = "SELECT count(*) as c FROM searchengine WHERE title LIKE '%" . mysqli_real_escape_string($con,$query) . "%' OR keywords LIKE '%" . mysqli_real_escape_string($con,$query) . "%' OR link LIKE '%" . mysqli_real_escape_string($con,$query) . "%' ";
$search_count = mysqli_fetch_array(mysqli_query($con,$count_sql));
$number_of_result = $search_count['c'];
//SQL query
$stmt = "SELECT * FROM searchengine WHERE title LIKE '%" . mysqli_real_escape_string($con,$query) . "%' OR keywords LIKE '%" . mysqli_real_escape_string($con,$query) . "%' OR link LIKE '%" . mysqli_real_escape_string($con,$query) . "%' LIMIT " . $page_number . " , $results_per_page";
$result = mysqli_query($con,$stmt) or die(mysqli_error($con));
//$number_of_result = mysqli_num_rows($result);
$x++;
if($x==1)
if ($number_of_result < 1) {
echo "<b>No results found!</b>";
echo "<p>";
echo "Your search - <b>$query</b>" . " - did not match any documents. Please try different keywords.";
} elseif ($number_of_result > 1) {
echo "<b>$number_of_result results found!</b>";
echo "<p>";
//results found here and display them
$index = 1;
while (($row = \mysqli_fetch_assoc($result)) && ($index < 10)) {//10 results per page
$title = $row["title"];
$description = $row["description"];
$link = $row["link"];
echo "<div id='search-result'>";
echo "<div id='title'><a href='$link'>" . $title . "</a></div>";
//echo "<br />";
echo "<div id='link'><small>" . $link . "</small></div>";
//echo "<p>";
echo "<div id='description'><small>" . $description . "</small></div>";
echo "</div>";
echo "<br />";
$index++;
}
} elseif ($number_of_result == 1) {
echo "<b>$number_of_result result found!</b>";
echo "<p>";
//results found here and display them
$index = 1;
while (($row = \mysqli_fetch_assoc($result)) && ($index < 10)) {//10 results per page
$title = $row["title"];
$description = $row["description"];
$link = $row["link"];
echo "<div id='search-result'>";
echo "<div id='title'><a href='$link'>" . $title . "</a></div>";
//echo "<br />";
echo "<div id='link'><small>" . $link . "</small></div>";
echo "<br />";
echo "<div id='description'><small>" . $description . "</small></div>";
echo "</div>";
echo "<br />";
$index++;
}
}
?>
</td>
</tr>
<tr>
<td>
<input type="hidden" name="page" value="0" />
<div id="page-number">
Select Page Number:
<?php
//ie if 35 results are therer then we require 4 pages that are 0 to max_page_number
//current page number is equal to page_number
$max_page_number = ceil($number_of_result / $results_per_page);
//echo $max_page_number;
echo "<ul>";
//both the condition are not the neccesary
if ($max_page_number > 2) { // if more than 2 pages
if ($page_number > 0 ) { //Previous
echo "<li id='search-page-number'>";
echo "<a href=search.php?q=$query&page=".($page_number - $results_per_page).">Previous</a>";
echo "</li>";
}
for($index = 0 ; $index < $max_page_number ; $index++)
{
echo "<li id='search-page-number'>";
echo "<a href=search.php?q=$query&page=".($index * $results_per_page).">";
echo ($index + 1) . "</a>";
echo "</li>";
}
if (($page_number + $results_per_page) < $number_of_result ) { //Next
echo "<li id='search-page-number'>";
echo "<a href=search.php?q=$query&page=".($page_number + $results_per_page).">Next</a>";
echo "</li>";
}
} elseif (($max_page_number == 2 ) ) {
echo "<li id='search-page-number'>";
echo "<a href=search.php?q=$query&page=".($page_number == 0 ? 10 : 0).">".($page_number == 0 ? "Next":"Previous" )."</a>";
echo "</li>";
} elseif (($max_page_number == 1 ) ) {
echo "<li id='search-page-number'>";
echo "<a href=search.php?q=$query&page=0>1</a>";
echo "</li>";
}
echo "</ul>";
?>
</div>
</td>
</tr>
<tr>
<td align="center">
To insert your site in result fill in the form at <a href="insert.php">here</a>.
</td>
</tr>
</table>
</form>
</body>
</html>